james rosen is joining us with washington with more details. james? >> heather, good afternoon, about two weeks remain in a 45-day period of public comment on the latest environmental impact study released on keystone and after that in mid april. the ball will be back in the administration's court. portions of the 175-mile pipeline are being built and portions held up by the obama administration, citing, as you say, environmental concerns. as envisioned by the trans-canada corporation the pipeline would be the second of two. the first is already pumping close to 600,000 barrels of oil a day in from canada. and the second would bring online an estimated 830,000 barrels a day. >> it's now been more than 1600 days since the initial permits were filed for building the pipeline. to put that in perspective, it took the united states a little more than 1300 days to win world war ii. and it took lewis and clark about 1100 days to walk the louisiana purchase and back. . >> reporter: aides to president obama who visited the port of miami yesterday drum up suppo